package com.atguigu.gulimail.product.app;

import java.util.Locale;
import java.util.stream.Collectors;
import java.util.stream.Stream;

public class Hello {
    public static void main(String[] args) {
        Stream.of("one","two","three","four").filter(v->v.length()>3).peek(v-> System.out.println(v)).map(v->{
            return v.toUpperCase();
        }).
                collect(Collectors.toList());
    }
}
